Updated mediawiki/extensions
Project: mediawiki/extensions/CentralAuth  1ce15c8ae86ca01f20b6110b00ce209840170ad8

Make renameuser_queue.rq_wiki nullable

This corrects an error in the original DDL for renameuser_queue
introduced in I61acceb. We intended the rq_wiki column to be nullable.
A null value will be used to indicate that the user requesting a rename
is already a global Central Auth account holder.

Change-Id: I342c6dcc19ded36ebab530e98a3d81a7dc188748